Milk-cooler.



R. H. BURNS 6L H. M. MASON.

MILK COOLER.

APPLr-:Alon FILED MAY 3|. 1913.

Patented July 27, 1915.

2 SHEETS-SHEET l.

R. H. BURNS @L H. IVI. MASON.

MILK cooLER.

APPLICATION FILED MAY31' 1913- M Patented July 27, 1915.

2 SH EETS-SHEET 2.

main liquid receptacle an `IBLOBlEBfl- Hi. BURNS AND HENRY M. MASON, OF KENNEWICK, WASHINGTON.

Mink-COOLER.

Specification of Letters Ijatent.

rammed Jury et, ieia.

Application Afiled May 31, 1913. Serial No. 771,017.

'To all whom t may concern:

Be it known that we, ROBERT H. BURNS and HENRY M. MAsoN,fcitizens of the United States, residing at Kennewick, in the county of Benton and State of Washington, have invented new and useful Improvements in Milk-Coolers, of which the following is a specification.

rllhe present invention has vreference to liquid coolers, and more particularly to devices for cooling milk, cream, and buttermilk. lt resides, briefly, inthe production of an extremely simple and inexpensive device for cooling liquids of the aforementioned classwhich is so constructed as to elfect the cooling of the liquid by means of a revolving ice-container dis osed within the carrying a fan or blade that serves to: agitate the liquid during the time that the receptacle is in mo tion, thereby equalizing the liquid.

An embodiment of the invention is illustiated in the accompanying drawing, Whereo Figures 1 and 2 are, respectively, a side elevation and a longitudinal section of the improved cooler; Fig. 3 is a plan viewof the cooler, part of the ice-container cover being broken away; Fig. l is a detail sectional view, on an enlarged scale, of the liquid-discharge device; and Fig. 5 is an enlarged fragmental perspective view of the upper portion of the ice-container. Y

As shown in said drawing, the cooler preferably comprises `the following main parts, to wit: outer and inner receptacles adapted to contain, respectively, the liquid to be cooled and the ice, a stand or base whereon the outer receptacle rests, a cover for the said outer receptacle, and a device for rotating' the inner receptacle.

Both receptacles, which are indicated by the reference numerals 1 and 2, are constructed, by preference, of glass, and are inthe form of vertical cylinders closed at theirlower and open at their upper ends. rlhe outer receptacle 1 rests, as originally stated, upon the base, which latter consists of a galvanized iron inner ring 3.,'and an outer nickel 'ring 4; arranged concentrically' and having their. upper edges hooked or bent tol provide a supporting seat 5 and a coacting retaining lip 6 for' the `circumferential rib 'Z formed upon the bottom edge of the said outer receptacle.

The inneror ice-containing receptacle 2 is arranged concentrically within the outer receptacle and is of appreciably less diameter than the latter, so as to produce the interposed annular chamber 8 that receives the milk or other liquid to be cooled. The bottom Wall of this receptacle is formed with a-central bearing opening 9 to receive the pivot 10 formed upon a centrally-located boss 11 with which the bottom wall of the outer receptacle is provided, andits main or` vertical wall'has formed thereon a spiral blade or flange 12, also of glass, that extends from one end of the receptacle to the other and is of a width which very closely approaches that of chamber 8. Preferably, a single continuous spiral flange is employed which encircles the inner receptacle 2 to form a suitable number of convolutions about the same, and this flange has such a pitch as toproduce essentiallyA a vertical circulation or movement of the liquid rather than a rotary movement thereof, lthus insuring uniformity in the character of the liquid from top to bottom of the chamber 8 but avoidingA any appreciable churning action thereon.

To close the openupper end of the outer receptacle 1, there is provided acover 13 of any approved design, but preferably constructed of glass. rllhis cover is formed upon its lower face with a circular seat 14 which receives therein the upper edge of the outer receptacle, and said edge is notched at intervals, as indicated by the numeral 15, to receive depending pins or lugs 16 profvided in the aforesaid seat, the coperating parts 15 and 16 constitutino` a lock that serves to prevent rotation of tlie cover. The said cover is also provided with a central opening 17, through which the upper end of the inner receptacle projects, and with a filling' opening 18 for the milk, the latter opening extending through the cover and being furnished with a removable cap or closure 19.

The device for rotating the inner receptacle 2 preferably comprises a spring motor or clock-work 20 of any suitable type which is rigidly mounted upon a cap-like base member 21 that serves to cover the upper end of said receptacle. The depending flange portion of this cap is provided with inwardly-projecting lugs V`22 receivable in notches 23 in the upper edge of the receptacle, so as to insure the rotation of the latter with the cap when the motor is running.

l.ceptacle 1 and consists, in the present instance, of a rotary cock or valve 28, fitted in an opening in a spindle-like body portion 29, the L-shaped passage in the valve being brought in'tojand out of registration with the spindle bore 31 when the valve is turned by its handle 32. The aforesaid spindle extends through an opening in the wall'of the receptacle, and terminates at its inner end in a head 33; it is'held in place by a nut 34 located exteriorly of the said receptacle wall and designed to be tightened thereagainst, a pair of rubber washers 35 and 36 being disposed upon opposite sides of said Wall and between the same and said nut and spindle head, to provide the requisite liquid-tight joint.

In operation, the motor and its cap are first removed from receptacle 2, and the latter then ifilled with ice, after which they are replaed,`and the receptacle 1 filled with milk or other liquid by way of the opening 18. The motor is then started, to eiect the revolution of the ice-containing receptacle, with the result that the milk is rapidly cooled and, lat the same time, continuously agitated by means of the spiral flange.

' whereby the cream is prevented from rising and is distributed evenly vrthroughout the entire body of milk. It is to be understood, however, that the movable receptacle rotates at a, very slow rate of speed,y so that there is no danger of the flange exercising any churning action Whatever upon the milk.

Having fully described our invention, we

claim 1. A cooler of the type specified comprislng, in combination, an outer liquid-containing receptacle, an inner refrigerant-containing receptacle surrounded by convolutions of a spiral flange, and means for relatively rotating the inner and outer receptacles to produce vertica1I circulation of 'the' li uid 1n the outer receptacle bysaid flange wlthout appreciable rotary or churning action upon the liquid.

2. A cooler of thetype specified, comprising, in combination, an outer liquid-containing receptacle having a relatively fixed cover; a refrigerant-containing receptacle rotatably mounted within the first-named receptacle and having a surrounding flange with such a pitch as to cause vertical circulation of-liquid in the first-named receptacle; and a device mounted upon the top of the second-named receptacle and cop; eratively engaged with said cover, for rotating the second-named receptacle to cool the contents of the first-named receptacle and to cause vertical circulation of such contents by said ange.

3. A cooler of the type specified, comprising, in combination, inner and outer glass lreceptacles adapted to contain, respectively,

a refrigerant and the li uid to be cooled; a

delivery faucet connecte to the outer receptacle; a device for rotating the inner receptacle, to cool the contents of the outer receptacle; and a spiral glass ilarfge surrounding said inner receptacle and having a pitch to agitate the contents of the said outer. receptacle in a vertical direction and to avoid churning action when the innerreceptacle is rotated.

4. A cooler of the type specified, compris;4 j ing, in combination, an outer liquid-containing rece tacle; a stationary cover therefor provide with a central opening; a refrigerant-containing receptacle rotatably mounted within the first-named receptacle and projecting through said opening al removable cap locked upon the projecting endof the second-named receptacle; and a device for rotating said second-named receptacle affixed to said cap for removal therewith and coperatJively engaged with said cover..

5. A cooler of the type specified, comprisi.

ing, in combination, an outer liquid-containing receptacle; a stationary'cover therefor providedwith a central opening and with .an annular rack encircling the same; 'a refrigerant-containing receptacle rotatablyl mounted within the irst-named receptacle and projecting through said openin a reof the second-named receptacle; and a spring motor for rotating said second-named movable cap locked upon the projecting end l receptacle alixed to sald cap for removal.l

therewith and. including a pinionv engaged with said rack.

In testimony `whereof we Ihave lhereunto set our hands in presence of two subscribing witnesses.

- ROBERT H. BURNS. HENRY M. MASON. Witnesses to R. H. Burns:

MINNIE LARsEN, FRANK S. CARROLL. Witnesses to H. M. Mason:

JOHN BECKMAN,- GEO. P. ELLIOTT. 

